Hoisting device



NOV. 15, 1932. Y Q, C, HAMRE 1,887,553

HOISTING 'DEVICE l Filed Feb. 21, 1931 4 sheets-sheet 2 A TTORNEY.

Nov. 15, 1932. o. c. HAMRE I HoIsTING DEVICE 4 Sheets-Sheet 5 FiledFeb.' 2l, 1931 INVENTOR, smafzd 6.' fam/z;

ATTURNEY.

Nov. 15, 1932. o. c. HAMRE HOISTING DEVICE Filed Feb. 21. 1931 4sheets-sheet` 4 THM.

INVENToR,

ATTORNEY.

Patented Nov. 15, 1932 OSMUND C, HAI/IRE, F SPRINGFIELD, MASSACHUSETTS'Holsteiner DEVICE Application filed February 21,1931. Serial'Nd517,379.

This invention relates to improvements in hoisting vdevices and moreparticularly to that type of hoisting device which is designed to beused in co-operation with a :i motor truck which is equipped with awinch or windlass that is operated by the trucks motor. l

An object of my invention is to provide a hoisting device which may bequickly and easily erected on and secured to the body of a motor truckand ready to be operated by the Winch, which isa part of the standard`equipment of the truck, for raising and lowering an article, as a safe,orpieces of building material.

A further object of my invention Vis to provide a hoisting device whichmay be mounted on and secured to the floor of a motor truck in such away as to permit the ordinary movements of the truck from place to placewith the hoistingr device in place thereon, thus giving the hoistingdevice the same flexibility in movement from place to place as any motortruck.

A still further object of my device is to provide co-operative means,whereby the hoisting device is braced in the ground when desired, inorder to relieve the truck chassis of excessive strain when heavy loadsare 3f) being moved by the hoisting device.

At the present time, when a safe or a heavy piece of building materialis to be hoisted in place, it is often necessary to erect a temporarystructure for'the particular or special piece of work to be performed.By means of my improved hoisting `mechanism, Whichsis located on andsecured to a truck, it may be moved from place to place and the hoistingapparatus quickly assembled for use, as readily understood.

These and other objects and advantages of my invention will be moreparticularly set forth in the accompanying specification with referenceto the drawings,- and appendedclaims.

` Broadly, my invention consists,.in co-operation with a motor truckwhich is equipped with a double drum winch, whichv is connectedto beoperated by the truck motor, of a hoisting device comprising a.triangularing cable operated by the other drum of the rmeans for bracingthe frame on the ground yshaped framework, bracing means securedto l theapex of said frame, a boom, a boom cable loperated by one drum of thewinch, a hoistwinch, the usual pulley blocks co-operating withsaidcables, means for erecting the frame on the truck body, means forsecuring the frame and braces to the truck body,'and

when desired. l

A preferred form of myl invention is illustrated in the accompanyingdrawings, in which: Y

Fig. l is a side elevational. view showing the hoisting device mountedon a truck body ready for use..

Fig. 2 is a plan view of the same.

Fig. 3 isa side elevational view illus- Y tratingthe method of erectingthey apparatus on thetruck body. y 79 Fig. l is a cross sectional viewtaken onv the line 4-4 of Fig.k 3 illustrating the function-oftheerection frame mounted on the base member of the triangularhoistframe.

. Fig. 5 is a detail sectional view on the line 5-5 of Fig. 1, showingthe knee brace used to transferj the stresses inthe hoist frame bracesdirectly to the main chassis of the truck. Fig. 6 is a detail sectionalview on the line 6-7-6 of Fig. 9 showing the construction at the apex ofthe Vhoistframe. p

Fig. 7 is a plan view of the upper end of the boom. K

Fig. 8 is a sectionalview on the line 8 8 of Fig. 7.

Fig. 91S an end View of thev hoist frame y erected on and secured to thefloor of a motor truck.V Y

Fig. 10 is a detail, sectional view on the line 10-10 of Fig. 9. v Y,

Fig. 11 is a sectional view on the line l11-11 of Fig. 1.,*ill`ustratingthe central hoist cable guide attached to the boom, and Fig. l2 is aplan view ofthe support for the rear wheels and anchor for the same. Y

Referring now vto the drawingsin detail,

in whiehlilre numerals refer to like parts throughout:. y l

The motor truck 1,equipped with the 100 double drum winch 2, and 2mounted directly back of the cab 3 on the truck floor 4, and operated bythe truck motor, (not shown), is used as a support for and carrier ofthe hoisting devicel 5. The truck ioor 4 is built up of the plank 6supported on a series of paired channels 7, which are in turn supportedon the truck frame 8. The side and rear edges of the truck floor 4 arereinforced by the angle iron 9.

The principal members of the hoisting device are the main frame 10, theerection frame 11, braces 12 and 13, connected to the main fra-me 10,boom 14, and footbraces 15 and 16. The triangular-shaped main frameconsists of the bottom member 17 and converging side members 18 and 19,framed together as indicated. The ends 20 and 21 of the bottom member 17extend beyond the side members 18 and 19, and the sides ci' the truck.

The foot braces and 16 pivotally secured to the ends 20 and 21, asindicated at 15 and 16. When the truck is moved, or whenever theoot'braces are not in use, they are swung upward and out of use againstthe side members 18 and 19, as indicated by dottedlines in Fig. 9. Thebottom member 17 is secured to the truck body when in use by means orthe hook Vbolts 22 and 23 which pass downward through the usual stakeholes in the truck floor, and hook under the upright leg or web of theangle iron 9, as indicated in Fig. 9. An eye bolt 24, (see Fig. 9 issecured to the bottom member 17, at one side of the center, and servesas an anchor for the pulley block 25, which guides the boom cable 26.Fig. 10 illustrates the method of securing the boom 14 to the bottommember 17 yby means of the plate 27, which is formed with the opening 28and riveted to the bottom flanges of the n cross-pairedchannels'.Theking bolt 29 having mounted thereon the cast steel block 30 vandwasher 31, is dropped through the openings 32 and 33 in the bottommember 17 and floor plank 6, respectively, between the channels 7, andthrough the opening 28 in the plate 27, and retained in place by the pin34. rlhe plates 35 secured to the boom 14 by the bolts 36, are supportedon the steel block or casting 30 with the pivot pin 37. 38 isV a ringsecured to the bottom .member 17 by angles 39, plate 40, and bolts 41and serves as an anchor for the pulley block 42, (see Figs. 1 and 2)which guides the hoisting cable 43. The pulley block 42 is held inposition at all times to prevent snarling of the hoisting cable 43 bymeans of the cables 44 and 45. which pass over the sheave wheels 46 and47 and are secured to the counterweight 48. v

Arlhe erection frame 11 isalso bolted to the bottom member 17, as shownin Fig. 4, with the bolts 11 and will be more fully described later.

rEhe side membersr18 and 19 of the main frame 10 are secured together atthe apex of Ymember 79.

this frame with the plates 49 and 50, (see Fig. 6). The channels 51 and52, formed with the openings 53 and 54, are fra-med between the plates49 and 50 as indicated, and the king bolt 55, having secured thereon thecast steel block 56 and washer 57, is passed through the openings 53 and54 and held in place by the pin 58. Secured to the block 56 by the pivotpin 59 is the U-shaped member 60 which in turn retains the ring 61,which serves as an anchor for the pulley block 62 for the boom cable 26,as shown in Fig. 1. The U-shaped, or clevis members 63 and 64, aresecured to the plates 49 and 50 with the bolts 63 and 64 and the channel51, and the member 63 acts as an anchor for the boom cable pulley block65. `When the main 'frame 10 is being erected, the erection cable 66 issecured to the clevis member 64. Anchor members 67 and 68 are boltedtothe plates 49 and 50 and the side members 18and 19, and stay lines 69and 7 0 are secured to these members.l The angleiron brackets 71 and 72are secured to the plate 50, and one end of the braces 12 and 13 ispivotally connected to the brackets 71 and 72, respef'ztively.` Theopposite ends of the brace 12 and 13 are secured to the angle 9 of thetruck floor 4 by bolts 73. The'angle 9 is framed to the channels 7, andthe stresses of the braces 12 and 13 are transferred from the angle 9 tothe truck frame 8 by the knee braces 74, framed between the frame 8 andthe channels 7, as indicated in Fig. 5.

The construction at the top of the boom 14 is illustrated in Fig. 7.Plates 75 and 76 are securedrto opposite sides of the boom 14, and theshaft 77, supported in the boom 14 and plates 75 and 76, forms a bearingfor the hoist cable sheave 7 8 and the U-shaped clevis The boom cableblock 80 is hooked in the clevis member 79, (see Fig. 1). To prevent thehoist cable 43 from jumping off the sheave 78, and to the quick and easyinstallation and removal of the hoist cable, the ring or eye bolt 81 issecured between the plates 75 and 76 and over the sheave 78, asindicated in Figs. 7 and 8. The ring bolt 81 is provided with the ringor eye 82 and ring nut 83, to which are secured the sway lines 84 and85. Bumper strips 86 and 87, secured to the under side of the boom 14 oneach side of the sheave 78, prevents wear on the wood boom from the swayand side strain of the cable 43.

The hoisting cable 43 is guided down the boom 14,v and prevented fromsnapping or swinging out of place, by the cable guides 88 and 89.. Theguide 88 comprises the bracket 90, (see Fig. 10), in which ispivotallymounted the roller 91, pivotally supported by the bolt 92 in the angleirons 93, which are secured to the boom 14 by the bolts' 94. The hoistcableV 43 is guided by the under side of the roller 91, as indicated inFig. 10. The

"i-,savgssis yguide 89 is shown in Fig. 11, and comprises the roller 95pivotally supported in the angle irons 96, which are secured to the boom14 by the U-bolts 97.Y The'cable 43 rides on the lshaped at'their lowerendsV and shod with steel plates 99, and customarily wood blocks 100 aresetunder these ends to'spread the load on the ground, and .preventlateral'movement of the truck.

The .main frame 10 and attached braces 12 and 13` are-shipped in aihorizontal position,

bas indicatedin F ig.` 3, and in this position the erection brace 11forms a support lfor the braces 12 and 13; Studs 101,v secured to thetop member 102 of the brace 11 engage the braces 12 and 13 and hold themin place during shipping and handling. (See Figs.

3 and 4.) Then the main frame 10 is to. be

erected on the truck floor 4, stakes 103v are ir'st inserted in stakeholes in the Hoor 4. .The frame 10 is then placed on'therear of thetruckfoor inthe position indicated in Fig. 3, with the bottom member 17against the stakes 103. The erection cable Y66 is then secured to themember 65, passed over the top member 102 of the-erection brace11and acouple of turns taken around` the sheave 104 on the winch 2. The winchis then operated, andthe main frame 10 is pulled upward into position,as indicated by dotted lines in Fig. 3. The erection brace 11, when themain brace 10 is in an upright position, lies on the floor 4 of thetruck, :tlius preventing the main frame 10 from tipping back-i wardbefore the braces 12 and 13 are secured to the angles 9. Y Y

In operation, the various parts of the -hoisting device are placed onthe ioor of the truck and driven to the desired location, such as arailroad yard or a building in process of construction. The hoistingdevice is then erected and assembled on the truck, and put intooperation. It may be usedefliciently in loading and unloading freightcars when a crane is not available. When one car is loaded or unloaded,the hoisting Vdevice and truck, as a unit, may be moved to Onbuildingconstrucanother location. tion, the device may be used at onelocation, then moved to another location. VLoads may be picked up by thehoisting device, the truck operated, and the load thus moved to adifferent location. This hoisting device is adapted to eflicient servicein a wide variety of uses, a few of which are; loading and unloading offreight, erection of structural steel, stone, concrete, and many otherbuilding materials, wrecking operations, installation of safes and otherfurniture. through windows4 on the upper ioors of oiice buildings,eXcavating, etc. Y Y

' t Referring to thel construction shown. in vFign12, 105 and 106indicate two half round pieces of timber which are spaced from* eachother to form a recess to receive the two rear wheels 107'. These `twopieces are firmly secured together with the pieces 108 and 109 andbolts110` When the apparatus isto be Vused for liftingV a heavy loadandthe boom 14 isswung outward at the side of the truc-k, the rearwheels 107 are backed or drawn over the half round pieces 1057and 106and loca-tedin the yspace between these" pieces. The chains 111 are,then connected to t-he pieces 108 and `109and the angle irons 9 of thetruck frame, as shown by means of the -rings ,112 and 113.-.'It will beseen thatr thev `pieces 105y and 106 will operate to KVmaintain the'wheels 107 in placeagainst movement, eitherfforward or rearwardwhilethe chains lllwvill operate to anchorl the truck yagainst any tipping orlateral movement by -reason ofits being connectedto the pieces 105,

106 and 109, as readily-understood@ In other words, the truckis firmlyretained in pl'ace against both longitudinal and lateral movey.

ment. y

- What I claimis:

1. In combination, a portable hoisting" apparatus, a wheel supportedtruck platform, a

4double winding drum thereon,` a-tviltabletriyangular-shaped main frame,means for retaining the same on the truckiplatform, comprising hookbolts secured to said frame and to, the truck platform, foot bracesVpivotally Vsecured to the main frame, means for laterally retaining'themain frame in an lupright position, comprising a pair of stayk braceseach V having an end pivotally secured to said fra-me and an oppositeend removably Secur'ed'to a side of lsaid truck platform, a boom memberlpvotally connected to the base part of the said mainframe and to thetruck platform for vertical and lateral movements, a hoisting cableconnected to one of the drums and supported and guided on the boom, aboom` supporting cable connected to the main frame and the other drum.l

2. In combination, in a portable hoisting apparatus,of a wheel supportedtruck, a main supporting frame, meansV vfor detachably se-A curing saidframe to the platform ofthe truck, aboom member, means for ypivotallyattaching said boom member to the said main frame and to the truck floorfor movements in both a vertical and horizontal plane, said main framehaving an erection frame connected lto the base part of the mainframeand at right angles thereto, *for` temporarily retaining thev mainframein a vertical position, drum winding and cable means for raising landvlowering the said mainV frame, a

hoistingcable onV the boom, a winding drum y on the truck lforoperatingpthe same, and

alignment withthe boom forfree movements during its operation 1n raisingorlowering a Y weight.

3. In combination, in a portable hoisting apparatus, of a wheelsupported truck, a main supporting frame, meansffor` detachably securingsaid frame to the platform of the truck, a boom membermeans forpivotally attaching the boom member to the main frame and to the floorof the truck for movements in both ai vertical and horizontal plane,said -main frame having a secondary frame that is connected to thebasepart of the main frameat right angles thereto, to assist in erectionof the main frame and for temporarily retaining the main frame in avertical position, drum winding and cable means for raising and loweringthe said main frame, a hoisting cableV on the boom, a winding drum onthe truck for operating the saine, and guiding means securedon said boomfor constantly 4winding drum on the truck, a triangularshaped main framenormally located on the Vfloor of the truck, means for detachablyVsecuring the base part of the main frame to the truck Hoor when raisedinto its operative position comprising hook devices which pass throughopenings in the floor, an erection frame for the main frame secured tothe main frame, brace members connectedv to the main frame, and truckfloor, and guiding means for the same on the erectionframe, a cableconnected to the main frame, and to the winding drum, and stake means onthe platform floor of the truck for retaining the main frame inV placevduring the erection movements, as described.

5. In a portable hoisting apparatus in combination with, a supportingtruck, a winding drum on the truck, a triangular-shaped main framenormally located on the floor of l.the truck, means for detachablysecuring the base part of the main frame to the truck floor when raisedinto its operative position Vcomprising lhook devices which pass throughopenings inthe floor, an erection frame for-the main frame secured tothe main frame, brace members connected to the main frame and truckframe and guiding means for the brace members on the erection frame, acable Yconnected to the main frame, and tothe winding drum, stake meanson the floor of the truck for retaining the mainframe in place duringthe Verection movements, as described.

6. A portable hoisting apparatus comprisyingin combination, a wheelsupported truck,

a main frame, a boom pivotally connected-to Ythemain framev and to thetruck, an erecting frame secured to vthe main frame having memberslocated at an angle to the plane of the main frame, whereby when thekmainframe is not in use andlocated on the truck floor the erecting framestands in a plane substantiallyv at right angles-to the truck floor,supporting braces pivotally secured to the main frame which are guidedbetween ing frame and 'connected to the truck body,

asdescribed. .Y 1

7. A portable hoisting apparatus comprising in combination, la wheelsupported truck, a main frame, an erecting frame secured to the mainframe and to the truck floor, having members located at an angle to theplane of the main frame, whereby when the. main frame is not in use and'locatedy on the truck floor the erecting Yframe standsin a planesubstantially at right angles to the truck floor, supporting braces for,thel main frame which are guided between stops on the erecting framewhenjthe mainframe is in .process of erection, cable'means connected tothe main vframe and passed loosely over the erecting frame, a windingdrum on the said truck for moving the main frame into a verticalposition, whereby when said frame is in a vertical position the saidbraces are detached from the erecting frame and may be connected to thetruck body, as described. Y K

8. A portable hoisting apparatus, having in combination with a wheelsupportedtruck `having stake hole openings in its floor, stakes locatedin the openings, a main frame composed Vof a base piece and side memberswith the base piece in engagement with the stakes for retaining the baseagainst movement on the truck floor when the main frame is being raisedfrom its normally inoperative horizontal; position into its operativevertical position, brace'members on the main frame to limit `the upwardmovement of the main frame, drum and cable means for moving the mainframe from its normally inoperative position into its vertical positionand brace means on the main frame for engaging the ground at theoppo'sitesides of the truck to prevent lateral movementt 9. A portablehoisting apparatus, having in combination with a wheel supported truck,having stake hole openings in its iioor, stakes located in the openings,a main-frame composed of a base piece andside' members with the basepiece in engagement with the llt stakes for retaining the base pieceagainst movement on the truck floor when the main frame is being raisedfrom its normally inoperative horizontal position into its operativevertical position, brace members on the main frame to limit the upwardmovement.

of the main frame, and drum and cable means for moving the main framefrom its normally inoperative position into its vertical positioncomprising a drum, a cable connected to the drum and main frame andpassed over the members on the main frame, and means for retaining themain frame in its vertical y position. v Y

10. A portable hoisting apparatus, having in combination With a Wheelsupported truck,y

having stake liole openings in its floor, stakes located in theopenings, a main frame composed o a base piece and side members With'the base piece in engagement'vvith the stakes for retaining the baseagainst movement on the truck ioor when the main frame is being raisedfrom its normally inoperative horizontal position into its operativevertical position, stop members on the main frame to limit the upwardmovement of the main frame, and means for moving the main frame from itsnormally inoperative position into its vertical position comprising adrum on the truck,

Y a cable connected to the drumand main frame and passed over themembers on the main frame, and brace means for retaining the main framein its vertical position, a boom pivotally connected to the base pieceand to the truck floor for vertical and horizontal movements.

11. A portable hoistingapparatus comprising in combination with a truck,a boom,

a main frame, means for securing the main frame to the ,truck flo-or, apivotal boom bearing secured to the main frame and truck floorcomprising a pair of spaced channel irons secured to the floor, a plateWith an opening secured to the flanges of the channel irons, the basepart of the frame and the floor having an opening, a bearing memberattached to the boom and a pin removably secured in the bearing andextending through the said openings in the base part, the loor and theplate, and between said channels.

OSMUND C. HAMRE.

